import cv2
import numpy as np
img=cv2.imread('photo.png')
cv2.imshow('Input',img)
imgHSV=cv2.cvtColor(img,cv2.COLOR_BGR2HSV)
lower=np.array([[78],[43],[46]])
upper=np.array([[99],[255],[255]])
dst=cv2.inRange(imgHSV,lower,upper)
cv2.imshow('Output',dst)
cv2.waitKey()
cv2.destroyAllWindows()